You might even want to consider the HP DV4000 or Compaq V4000T, which have the ATI x700 as available upgrade options. Moreover, it'll be easily less than $1.5k.
[Edit] A quick configuration of the Compaq V4000T get's
Operating System Microsoft(R) Windows(R) XP Home Edition with SP2
Processor Intel(R) Pentium(R) M Processor 760 (2.0 GHz)
Display 15.4" WXGA BrightView Widescreen (1280x800)
Graphics Card 128MB ATI MOBILITY(TM) RADEON(R) X700...